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/*
* Copyright 2012 Amazon Technologies, Inc. or its affiliates.
* Amazon, Amazon.com and Carbonado are trademarks or registered trademarks
* of Amazon Technologies, Inc. or its affiliates. All rights reserved.
*
* Licensed under the Apache License, Version 2.0 (the "License");
* you may not use this file except in compliance with the License.
* You may obtain a copy of the License at
*
* http://www.apache.org/licenses/LICENSE-2.0
*
* Unless required by applicable law or agreed to in writing, software
* distributed under the License is distributed on an "AS IS" BASIS,
* WITHOUT WARRANTIES OR CONDITIONS OF ANY KIND, either express or implied.
* See the License for the specific language governing permissions and
* limitations under the License.
*/
package com.amazon.carbonado.repo.sleepycat;
import java.io.FileWriter;
import junit.framework.TestCase;
import junit.framework.TestSuite;
import com.amazon.carbonado.Cursor;
import com.amazon.carbonado.Repository;
import com.amazon.carbonado.Storage;
import com.amazon.carbonado.TestUtilities;
import com.amazon.carbonado.stored.StorableTestBasic;
/**
* Tests the panic handler with BDB-Core.
*
* @author Jesse Morgan
*
*/
public class DBPanicTest extends TestCase {
public static void main(String[] args) {
junit.textui.TestRunner.run(suite());
}
public static TestSuite suite() {
return new TestSuite(DBPanicTest.class);
}
public DBPanicTest(String s) {
super(s);
}
private Repository mRepo;
private String mEnvHome;
private volatile boolean mPanicked;
private volatile boolean mTestDone;
protected void setUp() throws Exception {
BDBRepositoryBuilder bob = new BDBRepositoryBuilder();
bob.setProduct("DB");
bob.setName("test");
bob.setTransactionNoSync(false);
mEnvHome = TestUtilities.makeTestDirectoryString("test");
bob.setEnvironmentHome(mEnvHome);
bob.setLockTimeout(5.0);
bob.setCacheSize(100000);
bob.setPanicHandler(new TestPanicHandler());
mRepo = bob.build();
mPanicked = false;
mTestDone = false;
}
protected void tearDown() throws Exception {
if (mRepo != null) {
try {
mRepo.close();
} catch (Exception e) {
}
}
mRepo = null;
}
/**
* Test the panic handler as follows:
* - Open the repository
* - In a new thread, write random data to the repository
* - In the main thread, perform reads and writes
* - Fail if 1000 reads/writes succeed
* - Succeed if panic handler fires
*/
public void testPanicHandler() throws Exception {
Storage<StorableTestBasic> storage = mRepo.storageFor(StorableTestBasic.class);
StorableTestBasic stb;
Thread destroyer = new Thread(new Runnable() {
public void run() {
try {
FileWriter fwriter = new FileWriter(mEnvHome + "/__db.001");
while (!mPanicked && !mTestDone) {
fwriter.append('0');
fwriter.flush();
}
fwriter.close();
} catch (Exception e) {
e.printStackTrace();
}
}
});
try {
for (int i = 0; i < 1000; i++) {
stb = storage.prepare();
stb.initPropertiesRandomly(i);
stb.insert();
}
destroyer.start();
Thread.sleep(1000);
Cursor<StorableTestBasic> c = storage.query().fetch();
int i = 0;
while (!mPanicked && c.hasNext()) {
stb = c.next();
assertEquals(stb.getId(), i);
i++;
}
} catch (Exception e) {
// We expect exceptions to occur
}
mTestDone = true;
assertTrue("Panic Handler did not fire", mPanicked);
}
private class TestPanicHandler implements BDBPanicHandler {
public void onPanic(Object environment, Exception exception) {
mPanicked = true;
}
}
}
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